HCF of 12, 18 and 30 is:
a) 6
b) 3
c) 12
d) 180
If
a) 5
b) 7
c) 13
d) 28
If 10 is subtracted from 5 times of a number, 35 is left the number is _____?
a) 9
b) 72
c) 8
d) 35
The oxidation state of oxygen in OF2 is:
a) +2
b) – 2
c) +4
d) – 1
The inaudible sound is:
a) 1500 Hz
b) 25 Hz
c) 20,000 Hz
d) 22,000 Hz